Caotun in Winter
In winter (December, January and February), Caotun sees average daytime highs around 21°C and overnight lows near 14°C, with 190 mm of rain over about 29 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 21°C. The sky is clear or mostly clear about 52% of the time across winter, and the air most often feels dry.
Winter is Caotun's best season of the year to visit on our travel score. For the whole year in context, see Caotun's year-round climate.
- Avg daytime high
- 21°C
- coldest season of the year
- Avg overnight low
- 14°C
- Rainfall
- 190 mm
- 29 wet days
- Avg wind
- 6 km/h
- Travel score
- 6.9
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Caotun in Winter
Across winter, daytime highs hold fairly steady around 21°C.
A typical winter day in Caotun reaches about 21°C and drops to 14°C overnight. The warmest of the three months is December, the coolest January.
How winter really feels in Caotun
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Caotun weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 21° / 13° | 59 | 9.8 | 10.7 | 6.7 |
| Feb | 21° / 14° | 75 | 10.6 | 11.2 | 6.5 |
| Mar | 23° / 16° | 99 | 12.4 | 11.8 | 6.6 |
| Apr | 26° / 19° | 115 | 13.5 | 12.5 | 6.2 |
| May | 28° / 21° | 165 | 17.3 | 13.1 | 5.0 |
| Jun | 29° / 23° | 215 | 19.7 | 13.5 | 3.8 |
| Jul | 30° / 23° | 309 | 22.4 | 13.3 | 3.4 |
| Aug | 30° / 23° | 384 | 25.8 | 12.8 | 3.2 |
| Sep | 29° / 23° | 230 | 21.3 | 12.1 | 3.9 |
| Oct | 28° / 21° | 92 | 11.1 | 11.4 | 6.2 |
| Nov | 26° / 18° | 46 | 7.1 | 10.8 | 7.5 |
| Dec | 22° / 15° | 56 | 8.3 | 10.5 | 7.4 |
Cloud cover in Winter
The sky is clear or mostly clear about 52% of the time across winter.
Chance of precipitation in Winter
Caotun gets around 190 mm of rain over 29 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 6 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 36 min in early December to 11 h 30 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 3.6 kWh/m².
Hazard calendar for Caotun
In winter, Caotun overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Caotun sits in the Pacific typhoon belt; the season peaks July–October.
Caotun's monsoon runs June–September, when most of the year's rain falls.
Is winter a good time to visit Caotun?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Caotun for sightseeing.
What to pack for Caotun in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Caotun sees daytime highs around 21°C and nights near 14°C. Worth packing: light clothes and rain gear. About 29 days see rain.
Sea temperature near Caotun in Winter
The nearest coast averages about 20°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 36 km away) is warmest in August at about 29°C and coldest in January near 19°C.
It's comfortable for a long swim from Feb 21 to Jan 4 — about 10.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 19 | 20 | 22 | 24 | 26 | 28 | 28 | 29 | 28 | 26 | 24 | 21 |
| Comfort | Cool | Cool | Refreshing | Warm | Warm | Warm | Tropical | Tropical | Warm | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 19 | Cool |
| Feb | 20 | Cool |
| Mar | 22 | Refreshing |
| Apr | 24 | Warm |
| May | 26 | Warm |
| Jun | 28 | Warm |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Warm |
| Oct | 26 | Warm |
| Nov | 24 | Warm |
| Dec | 21 | Refreshing |
UV index in Caotun in Winter
Clear-sky midday UV across winter averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Caotun peaks around June 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 8 | 10 | 9 | 11 | 13 | 11 | 12 | 10 | 8 | 7 | 6 |
| Level | High | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 10 | Very high |
| Apr | 9 | Very high |
| May | 11 | Extreme |
| Jun | 13 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 10 | Very high |
| Oct | 8 | Very high |
| Nov | 7 | Very high |
| Dec | 6 | High |
Air quality in Caotun in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Caotun is worst in March — around 56 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (July, 33 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 45 | 48 | 56 | 50 | 41 | 34 | 33 | 36 | 41 | 38 | 41 | 39 |
| Level | Poor | Poor | Unhealthy | Poor | Poor | Moderate | Moderate | Poor | Poor | Poor | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 45 | Poor |
| Feb | 48 | Poor |
| Mar | 56 | Unhealthy |
| Apr | 50 | Poor |
| May | 41 | Poor |
| Jun | 34 | Moderate |
| Jul | 33 | Moderate |
| Aug | 36 | Poor |
| Sep | 41 | Poor |
| Oct | 38 | Poor |
| Nov | 41 | Poor |
| Dec | 39 | Poor |
Where is Caotun?
Caotun sits at 24.0°N, 120.7°E, 107 m above sea level, in Taiwan. The nearest listed city is Zhongxing New Village, 2.0 km away.
Topography around Caotun
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Caotun.
Within 3 km, the terrain around Caotun has only modest variations in elevation — a maximum elevation change of 246 m around an average of 127 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,139 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,887 m.
The land around Caotun is covered by trees (34%), artificial surfaces (34%) and cropland (30%) within 3 km, trees (64%) within 16 km, and trees (57%) and water (23%) within 80 km.
Taiwan travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 110 / 220 V · 60 Hz
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Caotun (23.977°, 120.6877°, elevation 107 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.